petiole


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petiole

1. the stalk by which a leaf is attached to the rest of the plant
2. Zoology a slender stalk or stem, such as the connection between the thorax and abdomen of ants

petiole

[′ped·ē‚ōl]
(botany)
The stem which supports the blade of a leaf.
References in periodicals archive ?
Thorax length 1.8-2.3 mm; Petiole length: 0.56-0.85 mm; Petiole height: 0.52-0.62; Petiole width: 0.4-0.6 mm; Post petiole length: 0.3-0.4 mm; Post petiole width: 0.3-0.5 mm; Post petiole height: 0.67-0.70 mm; Scape length: 1.1-1.5 mm; Cephalic index: 90.90-518; Scape index 1: 75-78.57; Scape index 2: 68.18-407.40; Petiole index: 107.69-137.0; Post petiole index: 44.77-57.14.
Potato petiole nitrate levels for plots amended with chicken manure were over 19,000 ppm at early tuber bulking, similar to levels produced by many field peas and vetches.
There was significant effect (p < 0.01) of water salinity on the formation of petiole phytomass (PDP) and leaf phytomass (LDP) (Figure 2).
The first germination count was carried out concomitantly with the emergence test, and was the number of germinated seeds at 21 DAS, considering as germinated the diaspores that showed protrusion of the cotyledon petiole.
The adjusted regressions between the petiole of the 3rd leaf and the P doses applied to the soil were significant at 5% probability only in the second and third cycle (Figure 2) and the adjusted linear regressions between the midrib of the 7th leaf in function of P doses application in the soil were significant at 5% probability only in the third cycle (Figure 3).
The values of Na:Ca ratio of leaves, stem + petiole, and absorption roots were higher for plants cultivated under salt stress (Figure 2B).
However, they stand as two separate species, as they consistently differ in the following set of characters: Burmeistera fistulosa is glabrous, the petiole is 1.4-2 cm long, the leaf lamina is elliptic to ovate, glabrous beneath, the subtending leaves are extremely reduced to filiform to scaly bracts to 4 x 1 mm, the floral buds are glabrous, the calyx lobes are 2.5-3.5 x 0.8-1.2 mm, the corolla is glabrous, the ventral anthers are barbate, and the berries are white and obconic.
Number of leaflets-NLL showed positive correlation with girth (G=0.0564; P=0.0627), sex ratio-SR (G=0.3258; P=0.0903), number of leaves-NL (G=0.1278; P=0.0031), petiole width-PW (G=0.1195; P=0.1770) petiole depth-PD (G=0.0755; P=0.1494), rachis length-RL (G=0.5757; P=0.4434), leaflet width-LLW (G=0.0492; P=-0.0233), leaf area-LA (G=0.4748; P=0.4672), leaf dry weight-LDW (G=0.2926; P=0.2892), total leaf dry weight-TLDW (G=0.3129; P=0.3010), vegetative dry matter-VDM (G=0.1337; P=0.1868), bunch number-BN (G=0.2230; P=0.1694), average bunch weight-ABW (G=0.1137; P=0.0758), bunch dry weight-BDW (G=0.1899; P=0.1436), total dry matter-TDM (G=0.2980; P=0.2928), bunch index-BI (G=0.0716; P=-0.0012) and oil to bunch ratio (G=0.1627; P=0.0726).
The stem + petiole retained most of the translocated [Na.sup.+], preventing it from being directed to the leaves, which is the place where important physiological processes and biochemical reactions occur.
Leaves alternate, spiral or distichous; petiolate or subsessile, presence of pulvinus; extrafloral nectaries absent or present, convex, sessile or stipitate, located between the pairs of leaflets or on the petiole; leaflets 1-many pairs, papyraceous to coriaceous, elliptic to oblong, lanceolate to obovate, apex acuminate, rounded to mucronate, base oblique.
Young 4-5 cm long shoots with leaves were excised to 1.5 cm2 leaf, 1.0 cm long petiole, and nodal explants.